Electronic and vibrational coherences in algal light-harvesting proteins

Daniel B. Turner, Gregory D. Scholes

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We present broadband two-dimensional electronic spectra of a lightharvesting protein from photosynthetic algae. Analysis of the spectra show that the amplitude of the main cross peak oscillates as a function of the waiting time period. Both electronic coupling and intramolecular vibrational modes, and their mixture, can lead to such oscillations. Using predictions based on models of four-level systems, we describe ways to distinguish electronic from vibrational contributions to the coherence and find that both types of coupling contribute to the measured dynamics.

Original languageEnglish (US)
Title of host publication18th International Conference on Ultrafast Phenomena, UP 2012
DOIs
StatePublished - 2013
Event18th International Conference on Ultrafast Phenomena, UP 2012 - Lausanne, Switzerland
Duration: Jul 8 2012Jul 13 2012

Publication series

NameEPJ Web of Conferences
Volume41
ISSN (Print)2101-6275
ISSN (Electronic)2100-014X

Other

Other18th International Conference on Ultrafast Phenomena, UP 2012
CountrySwitzerland
CityLausanne
Period7/8/127/13/12

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Turner, D. B., & Scholes, G. D. (2013). Electronic and vibrational coherences in algal light-harvesting proteins. In 18th International Conference on Ultrafast Phenomena, UP 2012 [08004] (EPJ Web of Conferences; Vol. 41). https://doi.org/10.1051/epjconf/20134108004